Ninja awesomeness! Drawing on canvas must be more difficult than drawing on regular paper, right? Several times I've been asked to draw on canvas, but I always refuse because I think it's too difficult.
it's not so bad. it's a lot different from paper, so it's really confusing for the first few minutes... you do lots of pencil stuff, so drawing on canvas might be a problem for you...pencils and canvas aren't friends.